Portable cartridge gas cooking stove



FIG. 1 is a perspective view of a portable cartridge gas cooking stove showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a plan view thereof;

FIG. 4 is a bottom view thereof; and

FIG. 5 is a side view of the design shown in FIG. 1. 

The ornamental design for a portable cartridge gas cooking stove, as shown. 